A. Figure, Density of the sintered material as a function of the sintering force (F 0 ) for dierent bead sizes B.7 Output les Both mechanical and acoustic software outputs are text le and png pictures. Here is a list of these data: 1. Mechanical data: ? dat_force.dat: Force measured by the force cell (unit: N)

@. Dat_time_force, dat: Time from the 'time start' when force is saved (unit: s)

@. Dat_time_picture, dat: Time from the 'time start' when each picture is saved (unit: s)

@. Dat_engine_marks_events, txt: History of the commands sent to the engine and time marks (time in ms and commands)

@. Xxxxxx, png: Pictures of the sample at the XXXXXX th time of dat_time_picture

@. Localisation and . Txt, Matrix with the data attached with the event which have been localised (time, position, energy

B. Table, 1 gives the input parameters of each experiments performed during our study

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